Extensive Psoriasis Induced by Pegylated Interferon Alfa-2a and Ribavirin in the Treatment of Chronic Hepatitis C

A 56-year-old man with chronic hepatitis C was treated with pegylated interferon alfa-2a in combination with ribavirin. However, psoriatic lesions appeared and worsened dramatically during therapy. Because of the extensive skin eruptions, he stopped therapy for chronic hepatitis C and subsequently started narrow-band ultraviolet B phototherapy and topical calcipotriol/betamethasone dipropionate ointment. After this, the psoriasis improved in a slow but comprehensive manner. Our case suggests that physicians should keep in mind the possibility of psoriasis as a side effect of interferon treatment for chronic hepatitis C.

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